The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2020
Filed:
Feb. 27, 2017
Aisan Kogyo Kabushiki Kaisha, Obu-shi, JP;
Daisaku Asanuma, Gamagori, JP;
Nobuhiro Kato, Tokai, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu-Shi, JP;
Abstract
An evaporated fuel processing device including a pump sending a purge gas from a canister to an intake passage, a control valve switching between a communication state and a cutoff state where the canister and the intake passage are cut off on the purge passage, a return flow passage having one end connected to the purge passage between the pump and the control valve, and other end connected to an upstream side of the pump, wherein the purge gas flows from the one end to the other end in a case where the pump is activated in the cutoff state of the control valve, and a detecting device specifying an evaporated fuel concentration in the return flow passage during the cutoff state of the control valve in a case where the control valve is controlled based on the duty ratio and the pump is activated.